Remote sensing earth surface temperature and long and short wave radiation quantity time scale extension method and system

Abstract

The invention relates to a remote sensing surface temperature and long and short wave radiation quantity time scale extension method and system, and the method comprises the steps: carrying out the matching of the numerical values of reanalysis data after interpolation processing and remote sensing data at the corresponding time point of the same geographic position; according to the difference value between the matched numerical values, obtaining the variation curve deviation of the reanalysis data; performing numerical stretching translation on the interpolated reanalysis data through variation curve deviation to obtain a variation curve after deviation correction; and obtaining remote sensing data under any time scale through corresponding time integration based on the variation curve after deviation correction. According to the method, the earth surface temperature of reanalysis data (or a mode simulation result) and a daily change rule curve of short-wave radiation and long-wave radiation quantity are used as a reference time curve of time scale extension; and on the basis of the corrected reference time curve, variables such as instantaneous temperature, instantaneous short-wave radiation, instantaneous long-wave radiation and the like which are estimated by remote sensing are expanded to any required time average scale.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a method and system for extending the time scale of remote sensing surface temperature and long and short wave radiation. Background technique [0002] Surface temperature, short-wave radiation and long-wave radiation are important foundations for the energy balance of the Earth system, as well as the driving force for atmospheric motion, affecting global energy and water cycles and global changes. With the development of remote sensing technology, the use of remote sensing data to estimate surface temperature, short-wave and long-wave radiation components has great advantages and prospects. [0003] At present, the surface temperature, short-wave and long-wave radiation directly estimated by remote sensing are all instantaneous radiation, but in many research and application fields, hourly average and daily average surface temperature, long- and short-wave radiation are ...

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Problems solved by technology

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a method and system for extending the time scale of remote sensing surface temperature and long-wave and short-wave radiation, which solves the existing program requirements and constraints for scale expansion of remote sensing data, and Technical problems of low accuracy and applicability of the scheme

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